What features of IE7 are difficult or impossible to emulate in IE6? In my experience, getting sites working with IE6 is really easy. There are very few things t

What features of IE7 are difficult or impossible to emulate in IE6? In my experience, getting sites working with IE6 is really easy. There are very few things that IE7 can do that IE6 cannot. (It is funny that this argument is usually only made to disparage IE7 but never to support IE6.) To support IE7 you've already given up border-radius, display: table, automatic PNG transparency, SVG, a lot of the DOM, and a lot of the other things that make developing for other browsers so easy. With IE6, you can get a lot of the functionality of IE7 with just a little Javascript (already written for you by others), a few conditional comments, and a little extra CSS. You might have performance issues with adding all these workarounds, but workiing with poor performance is usually better than not working at all.